/*
 *  (C) Copyright 2008 Insula Tecnologia da Informacao Ltda.
 * 
 *  This file is part of Vulcano.
 *
 *  Vulcano is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  Vulcano is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with Vulcano.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.openinsula.vulcano.flex.util;

import org.openinsula.arena.hibernate.entity.BaseEntity;
import org.springframework.util.Assert;

public abstract class ASUtils {

	/**
	 * Entity instances created in AS3 may not have correct initial values.
	 * For BaseEntity&lt;Integer&gt;, AS's int type will set 0 for both id and
	 * version properties. This method converts those zeros to <code>null</code>,
	 * allowing the persistence layer to identify the instance as new, thus
	 * proceding with SQL's INSERT operation.  
	 * @param instance Object created in ActionScript and serialized to Java.
	 */
	public static void initialStateCheck(final BaseEntity<? extends Number> instance) {
		Assert.notNull(instance, "null instance not allowed");
		
		if (instance.getId().intValue() == 0) {
			instance.setId(null);
			instance.setVersion(null);
		}
	}
	
}
